Job changes reflect both decisions of employers and employee. During the whole career, employees seek for and move to better opportunities. To some extent, employee moving is also a result of lost job of failed self-owned enterprise. It should be said that mobility across industries reflects both the short-term labor market response to GFC and long-term structural change in economy. In this paper, we want to describe the labor mobility in urban China base on the China Urban Labor Survey in 2010 (CULS23). Furthermore, according to the basic description we want to analysis how much mobility is toward more secure employment. Specifically, we need to investigate whether the mobility has the trend from informal to formal employment, how does mobility differ across man and woman, whether there is some difference between characteristics of the mobility before and after the financial crisis in 2008, and what the determinant affecting the mobility……